Mechanism for working pulpous material



Dec. 25, 1928 1,696,273 V f H. JESPERSEN I I MECHANISM'FOR'WORKING PULPOUS MATERIAL Original Filed May 16, 1924 sweats-sheet. 1

V Dem-25,1928. I 1,696,273 H. w. JESPERSEN IQECHANISM FORWORKING PULPOUS MATERIAL Original Filed May 16, 1924 3 Sheets-Sheet 2 12% 21707" fgwfiffgyoarrezz v, we D 25, 2 4:

UNITED STATES v v 1,696,273 PATENT OFFICE.

HELGO WIGGO'J'ESPERSEN, OI RIVERSIDE, ILLINOIS, ASSIGNOR TO WESTERN ELEC- .TBIC COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

7 Application fi led m 16, 1924, Serial of H. G. Walker, Serial No. 621,242, filed February 26, 1923, but it is to be understood that the invention is limited to such use only to the extent indicatedby the appended claims. i I

An object of the inventionis to provide an improved forming mechanism which opere ates by virtue of centrifugal force generated by the rotation of a forming member, or members of the mechanism.

Another object of the invention is to provide a forming mechanism having means whereby centrifugal force generated during rotation of a part of the mechanism may be adjusted to regulate the force with which theforming mechanism engages the pulpous material.

A further object of the invention is to control the positions which the forming member of a forming mechanismassumes with respectto the core being coated.

A still further object of the invention is to maintain the forming member of aformin'g mechanism parallel at all'times to a given position thereof.

A still further object of the invention is to provide a forming mechanism wherein a forming member is brought into pressing engagement with the pulpous material by centrifugal force to form it into a homogeneous and uniform coating. i

A still further object of the invention is to provide a forming mechanism which may be operated at high speedso that a forming member thereof may be brought intopressing engagement with the pulpous material by means of centrifugal force in such manner that it will not strip the pulpous material from the core during the forming operation.

A still further object of the invention is to provide a forming mechanism which may be easily and quickly cleaned.

In a preferred embodiment of the inven -tion, a carrier is provided having one of its MECHANISM FOR WORKING PULPOUS MATERIAL.

No. 713,704. Renewed June 14, 1928.

ends journaled in a suitable bearing so-that the. carrier may be rotated at high speed. The other end of the carrier is bifurcated,

each of the bifurcations having associated therewith a forming member comprising a car'rierby' any suitable means and preferably passes through the carrier in such manner that it traverses the axis of rotation of the carrier. Each of the plateswhich are adapted to engage the pulpous material is pivotally secured to one end of a lever pivotally mount: ed intermediate its ends in the carrier, the other end of each lever being provided with a weight adapted to be secured in a plurality of adjusted positions with respect to the pivotal axis of the lever. A link is provided for each plate, one end of the link being pivotally secured to the plate, and the other end of the link being pivotally secured to the carrier. The plates, levers and links are so proportioned that each plate may be brought into a plurality of parallel positions. When the forming mechanism is in operation, the

weights carried by the levers are adapted to generate centrifugal force which will bring the plates into pressing engagement with the pulpous material. Means is provided for spacing the plates a predetermined distance from the core so that thefinished coating on the core will be of substantially uniform thickness.

Other objects of the invention will become apparent as the detailed description pro- .gresses, reference being had to the accompanying drawings, wherein Fig. 1 is an elevation of a. forming mecha nism embodying the invention;

Fig. 2 is a section taken on line 2-2 of Fig. 1; I

Fig. 3 is a section taken on line 8-3 of Fig. 2;

Fig. 4 is an elevation of a forming mechanism embodying another form of the invention;

Fig. 5 is a section taken on line 55 of Fig. 4;

Fig. 6 is an elevation of still another form of the invention;

Fig. 7 is a section taken on line 7-7 of Fig. 6;

Figs. 8 and 9 are enlarged sectional views illustrating the manner in which the pulp is applied to the core before it is delivered to the forming mechanism, and

Fi s. 10 and 11 are enlarged sectional views showing the forming of a pulp coating during the forming operation and after the forming operation respectively.

The forming mechanism'shown in the accompanying drawing is especially adapted to operate in conjunction with apparatus shown in the aforementioned application to H. G. Walker, which apparatus is adapted to apgly pulpous-material to a core and comprises a foraminous member and a plurality of felt covered squeezing rolls. In the operation of this apparatus the core is first brought into contact with pulpous material deposited upon the foraminous member and then an additional amount of pulpous material is deposited upon the core and the foraminous member. The pulp so deposited and the core are then brought into contact. with one of the squeezing rolls which cooperates with the foraminous member to squeeze out the free liquid in the pulp coating. The partially dried pulp adheres to the felt oi the squeezing roll in the form of a ribbon with the core substantially centrally located there.- in as shown in Fig. 8 of the accompanying drawing, and the core with the pulp ribbon attached thereto passes around the roll and between it and its cooperating roll, the contour imparted to the ribbon by the squeezing rolls being shown in Fig. 9.

A forming mechanism embodying the tern tures of the present invention is designed to receive the core and its ribbon from the squeezin rolls and to wrap the projecting edges of the ribbon around the core and around each other until the contour of the coating conforms substantially to the shape of the core. The appearance of the coating after it is first acted upon by the forming mechanism is shown in Fig. 10, and the appearance of the coating after the forming action is completed is shown in Fig. 11.

Referring to the drawings, and more particularly to Figs. 1, 2, and 3 thereof, the reference character 10 designates in its on tirety a rotatable carrier in which is pivotally mounted a plurality of forming members 11. The rotatable carrier 10 comprises a head 12, which has one of its ends threaded into one end of a sleeve 13, the sleeve 13 being rotatably journaled in a plurality of bearings, one of which is shown at lat. The SlBGFG may be rotated by any suitable means (not shown) and thus constitutes means for rotating the head 12. The head 12 and the sleeve 13 are adapted to accommodate a core 15 in strand form, which may be drawn through the head and the sleeve by any suitable means (not shown). The arrangement is such that the core 15 traverse the axis of rotation of the head and the sleeve when it is being drawn therethrougb, the forming members 11 being adapted to engage a ribbon 16 of pulpous material upon the core and to wrap the ribbon around the core to form a coating therefor.

Each forming member 11 con'iprises a plate member 18, the plate members 18 being disposed in opposed relation and being adapted to receive the core 15 and its ribbon 16 between them. The core 1'5 is drawn through the forming mechanism in the direction indicated by the arrow 20 in Fig. 2. Thom ends of the plates 18 which receive the core as it is drawn into the forming mechanism are turned outwardly, as at 21, so that the ribbon of pulp is gradually wrapped around itself and the core while passing between the plates. Each plate 18 is provided with an outstanding lug 22. which is pivotally secured to one of a plurality of levers 23 by means of a pin 24. Each lug is also pivotally secured to one of a plurality of links 25 by means of a pin 26, each of the links being pivotally secured to the head 12 by a pin 27. Each lever 23 is also pivotally mounted intermediate its ends in the head 12. The means for mounting each lever comprises a pin 25) which has its ends shaped to form knife edge bearings for the lever, as indicated at 30. Each lever 23 is held against angular displacement relative to its pin 2!) by means of a pin Bl projecting from the pin 2.) and adapted to engage a key-way 32 cut in the lever .23. llach pin 2!) is held against longitudinal displacement by means of a plurality of set screws 33 threaded into the head 12, the set screws 33 being locked in place by means of a plurality of set screws 34. It will be noted that each set screw 3:5 is provided with a conical projection 23;) adapted to engage one end of the associated pin 29, this construction being adapted to permit the pins 29 to move without. undue friction. The construction of the plates 18, the lovers 233 and the links 525 is such that the distance between the pins Qiand 2(3 of either forming member is substantially equal to the distance between the pins '27 and 2!) of the forming member. Also the distance between the pin 26 of one forming member 11 and its pin 27 is substantially equal to :he distance between the pin 24 of that t'oimim'; member and its pin 2.). It. is obvious that a parallel link motion is thus obtained. and that each plate 18 may be brougl'it into a plurality of parallel positions. The advantage of this construction will presently appear.

The inner end of each lever carries a weight 37 which may be brought into a pinrality of adjusted positions with respect to the pin 29 pivoting the lever. Each weight 37 has a pin 38 adapted to ride in a slot 3!) Inn lit)

lit)

formed in the lever and is provided with a set screw 40 which ma be tightened to secure the weight in an a justed position upon the lever. The weights 37 are adapted to bring the plates 18 into engagement with the ulpous material upon the core 15 when the orming mechanism is in operation, it being understood that the weights are rotated bodily around the core at a speed enabling the weights to generate suflicient centrifugal force to bring the plates into pressingengagement with thepulpous material. It is apparent that for any given number of revolutions per minute for the head 12, the force with which the plates 18 press against the pulpous material may be regulated by adjust- I ing the Weights 37 with respect to their associated pins 29. i I

Meansis provided for gauging the thickness of the coating'formed upon the core. This means comprises a collar ll threaded upon the head 12 and provided \vitha frusto conical surface 12 adapted to engage the inner ends of the levers 28.. The collar elma'y be brought into a plurality of adjusted positions with respect to the levers23, in which positions the frusto-conical surface 42 'will limit angular displacement in one direction of each lever 23 around its pin 29. Th'ere fore, when the forming mechanism is in operation, the plates 18 will be spaced a predetermined distance apart and cannot engage the core to strip the pulpous material therefrom. The collar 41 may be secured in any one of its adjusted positions by means of a lock nut 43 threaded upon the head 12 and adapted to engage the collar. 1

Referring to Fig. 2, it has been noted that the outer end of the head 12 is bifurcated and, that the plates 18 are so arranged with re-v spect to the bifurcations of the head that they may be quickly and easily cleaned whenever it becomes necessary to do so. A rag ora brush may be drawn back and forth through the slotted end of the head in such manner that any pulpous materia1' adhering to the plates 18 will be disengaged therefrom.

In the operation of the forming mechanism shown in Figs. 1, 2 and 8, the core 15, together with its ri bon of pulpous material is drawn through the head 12 and the sleeve 13, the head and sleeve being rotated at a speed which permits the Weights 37 to generate the centrifugal force necessary to bring the plates 18 into pressing engagement with the pulpous material upon the core. The'plates 18 wrap the. ribbon of pulpous materialj around the core until it forms a coating-for the core as illustrated in Fig. 11. The thick ness of the coating may be gauged-by means of the collar 11 which may be adjusted to space the plates 18 a predetermined distance apart. As the plates are constrained to move into aplurality of parallel positions, the flat portions of the plates will at all times form coating upon the core.

. Figs. 4 and 5 illustrate another form of the invention. In these figures'the reference character designates generally a rotatable carrier, comprising a head 51 which has one of 'itsends threaded into one end of a sleeve 52. The sleeve 52 is rotatablyjournaled in a plurality of bearings, one of which is shown at 53, and a pulley (not shown) provides means whereby the sleeve and the head may be rotated at any desired speed. I The head 51 and the sleeve 52 are adapted to accommodate a core 15 having a ribbon 16 of pulpous material, the core 15 and the ribbon 16 being,

in this instance, identical to the core 15 and ribbon 16, shown in Figs. 1, 2 and 3. The

core 15 may be drawn through the head 51' and the sleeve 52 in a direction indicated by' an arrow 56 in Fig- 1 by any suitable means. (not shown).

The head 51 carries aplurality of forming members 57 adapted to engage the ribbon 16 of pulpous material and to Wrap the ribbon around the core to form a.

coating therefor.

Each form ng member 57 comprises a resihentblade 58 which 1s pivotally secured at the pulpous material into a smooth, even one of its ends to one of a plurality of pins 59 disposed in the head 51, each resilient blade 58 being provided with an apertured boss 60 adapted to receive the associated pin 59. The plates 58 yieldingly engage the pulpous material on the core 15 when the form ing mechanism is in operation, the blades be- 'ing held in pressing engagement with the.

pulpous material by means of centrifugal force generated by a plurality of Weights 62. As shown in Fig. 4, each plate 58 has associatedtherewith one of the weights 62, the weight being adjustably secured to the boss 60 of the blade. Thus, each weight 62 is pro .vided with bifurcations 64 adapted to engage the end surfaces of the boss 60, and a pinfi? threaded into the Weight is adapted to clampv the bifurcations against the boss. It is read ilynnder'stood that the force with whichthe resilient blades 58 engage thepulpous material on the core '15 may be regulated by angularly adjusting the Weights 62 around j the axesof the pins 59.

The resilient blades 58 1nay be spaced a predetermined distance apart by means of a sleeve '66 slidably journaled in the head 51 and provided with a plurality of triangular lugs 67 adapted to enterbetween the free ends of-the blades. The sleeve. 66 may be brought into a plurality of adjusted positions with respect to the blades 58 by means of a pin 68rotatablyjournaled in the head 51 and provided with a pin 69 adapted to engage a circumferential slot 70 formed in the sleeve 66. The pin 69 projects from the inner end of the pin 68 and is arranged eccentrically with respect to the axis of rotation of the pin 68. The slot has a width substantially equal to the diameter of the pin 69, the construction being such that if the pin 68 is rotated, the pin 69 will move the sleeve (56 toward or away from the blades 58. The pin 68 may be rotated by means of a screw driver or the like as it is provided with a slot 71 in its outer end. A set screw 72 threaded into the head 51 is adapted to engage an annular groove 73 formed in the pin 68 so as to prevent longitudinal displacement of the pin. It is apparent that the set screw 72 may be employed to secure the pin 68 against angular displacement after the sleeve 66 has been properly adjusted with respe: t to the blades 58 so as to space the blades a desired distance apart. A pin 75 driven into the head 51 has its inner end disposed in a longitudinal slot 76 formed in the sleeve (56 and prevents angular displacement of the sleeve (36 with respect to the head 51.

Another term of the invention is shown in Figs. 6 and 7 wherein the reference character 80 designates in general a rotatable carrier, which comprises a head 81. The head 81 is provided with a threaded end 82 adapted to be secured in one end of a sleeve (not shown) substantially identical with the sleeve 14: of Figs. 1 to 3 inclusive. The head 81 may be rotated by means of a pulley (not shown) secured to the sleeve and is adapted to fiCtOllllllOdtltG the core 15 with its pulpous ribbon 16. A pair of forming members 823 are bivotally mounted in bifurcations 8% of the head 81. Each of the forming members 83 comprises a plate having a plurality of ears 85 intermediate its ends, whereby the plate is pivotally mounted in one of the bifurcations 84.- by means of a plurality of pins 86. The inner ends of the forming members 83 are adapted to engage the pulpons material on the core 15 and to wrap the pnlpons material around the core to form a uniform coating therefor. The outer ends of the forming members 83 are adapted to bring the inner ends of the forming members into pressing engagement with the pulpons material when the head 81 is rotated. The centrifugal force generated by the outer ends of the forn'iing members will press the inner ends of these members against the pulpons material, the thickness of the finished coating on the core being gauged by means adapted to keep the inner ends of the forming members spaced a predetermined distance apart. The means for spa ing the inner ends of the forming members 83 a predetermined distance apart preferably comprise a sleeve 88 having a plurality of triangular lugs 89 adapted to enter between the inner ends of the forming members. I'he sleeve 88 is substantially identical with the sleeve 66 shown in Figs. l and 5 and may be adjusted with respect to the forming members 83 by means substantially identical to the means provided for adjusting the sleeve 66 with respect to the blades 58.

\Vhat is claimed is:

1. In a mechanism for working pulpous material on a core, a forming member mounted intermediate its ends, and means for retating the forming member around the core to cause the centrifugal force generated by one portion of the forming member to bring another portion of the forming member into pressing engagement with the pulpous material.

2. In a me;hanism for working pulpous material on a core, a plurality of forming members, each 'l'orming men'lber being mounted intermediate its ends, means for rotating each of the forming members around the core to cause the centrifugal force generated by one portion of the forming member to bring another portion thereof into pressing engagement with the pulpous material, and (0111111011 means for spacing the pulpengaging portions of the forming members a predetermined distance apart.

3. In a mechanism for working pulpous material on a core, a forming member mounted intermediate its ends and having one end adapted to engage said pulpous material, means for rotating the forming member around the pulpons material, adjustable means for spacing the pulp-engaging end of the forming member a predetermined distance from the core, and means for locking the last-mentioned means in a plurality of adjusted positions.

4. In a mechanism for working pulpous material on a core, a forming member mounted intermediate its ends, means for rotating the forming member around the core to cause the centrifugal force generated by one end of the i'orn'iing member to hold the other end of the forming member into pressing engagement with the pulpous material. and means for locking the forming member against displacement in one dirertion.

5. In a mechanism for working pulpous material on a core, a forming member coniprising an element unrestrained against movement into a plurality of parallel positions wherein it engages said pulpons material.

6. In a. mechanism for working pnlpous material on a core. a forming member comprising an element movable automatically into a. plurality of positions, wherein it engages the pnlpous material. and means for holding the element parallel to one position when it moves from that position to the other position.

7. In a mechanism for working pulpons material on a traveling core in strand form, a forming member comprising an element unrestrained against movement into a plurality positions to engage the pulpous malltl terial, and means for holdingtlie element parallel to one position when it moves from 7 that position 'to the other position.

n a mechanism for working pulpous material on a traveling core in strand form, a pivotally mounted forming member comprising an element pivoted to reciprocate freely into a plurality of parallel positions wherein it engages said pulpous material, and means for revolving the forming member around the core. I

9. In a mechanism for working pulpous material on a. core, a forming member comprising an element unrestrained against movement into a plurality of parallel positions to engage said pulpous material, and means for revolving the forming member to cause centrifugal, force generated by the formingmember to bring said element into pressing engagement with said pulpous material.

-10. In a mechanism for working pulpous material on a core, the combination with a forming member comprising a lever pivoted intermediate its ends, and an element pivotally secured to one end of the lever and movable'into a plurality of positions to engage said pulpous material, of means for rotating the "forming member to cause the centrifugal force generated by the other end of the lever-to bring the element into pressing engagement with said pulpous material.

11. In a mechanism for working pulpous material on a core in strand form, the combination Wit-h a forming member comprising a lever pivoted intermediate its ends, and an element pivota-lly secured to-the lever and movable into a plurality of parallel positions to engage said pulpous material, of means for rotating the forming member to cause the centrifugal force generated by one end of the lever to bring the element into pressing engagement with said pulpous material.

12. In a mechanism for working pulpous material on a traveling core in strand form, the combination with. a forming member comprising a-lever pivoted intermediate its ends, and an element pivotally secured toone end of the lever and movable into a plurality of positions to engage said pulpous material, of means for rotating the forming member around the core to cause the centrifugal torcegenerated by the other end of the lever to bring the element into pressing engagement with said pulpous material.

'18. In a mechanism for working pulpous material on a core, a rotatably mounted forming member comprising a plvotally mounted lever, an element pivotally secured to the lever and movable into engagement Wltll said pulpous material, and a link cooperating with the lever to hold the element in an operativeposit-ion with respect to said material on a core, a forming member comprising an element unrestrained against movement into a plurality of parallel positions wherein it engages said pulpous material, and means for spacing said elementa predetermined distance from the core.

16. In a mechanism for working pulpous material on a core, a rotatable carrier having a slot extending inwardly from one of its ends, and a forming member pivotally mounted on the carrier and having a pulp engaging surface registering with the slot.

17. In" a mechanism for working pulpous material on a core, a carrier having one of its ends rotatably journaled and having a slot in the other of its ends, and a forming member mounted in the carrier and having a pulpengaging surface registering with the slot.

18. In a mechanism for working pulpous material on a core, a forming member comprising an element unrestrained against movement and capable of adjusting itself automatically in accordance with variations in the thickness of the material applied to the core, and means controlling the movement of I said element in a given direction.

19. In a mechanism for working pulpous material on a core. a forming member comprising an element unrestrained against movement, means for adjusting the position of said element, and means for permitting movement of said element to a plurality of parallel positions in accordance with varia-. tions in, the amount of pulpous material on said core.

In Witness whereof, I hereunto subscribe my name this 6th day of May A. D., 1924.

HELGO WIGGO J ESPERSEN. 

